MM News

New! MM Technical Services: MM’s Engineering Team will provide setup recommendations specifically tailored for your Mustang. Get help choosing options for a Maximum Grip Box, deciding on coil-over spring rates, selecting a brake master cylinder, and advice on converting your Fox to Hydroboost.

New! Swapping a Coyote into a Fox Mustang? MM's Hydroboost Conversion Kits allow easy installation of a 1996-2004 Mustang Hydroboost power brake assist unit into a 1979-1993 Mustang.

New! Swapping an IRS into your Fox Mustang? MM makes it easier with a brake line kit made just for this conversion. Bolts-in, with no cutting or flaring of brake lines. Designed to fit standard IRS brake hoses.

New! MM now offers a tool for the giant nut securing a Mustang Hydroboost. This MM socket fits the 1-7/8" nut holding the Hydroboost to the firewall mount. Required when changing a Hydroboost unit.

New! MM's billet aluminum Pedal Box Spacer for Fox Mustangs. Replace the breakage-prone OEM plastic spacer when converting to manual brakes or Hydroboost.

Canadians! Please read the latest about ordering from Canada/shipping to Canada.

We've posted the parts list and link to the video of MM's Mustang in /DRIVE Tuner car Shootout

Racing Rear Upper Shock Mount, Koni 30-Series, 1979-04
Actual product may differ from photo.


  • Item # MMSM-3
  • Manufacturer: Maximum Motorsports


MM Racing Rear Upper Shock Mount, Koni 30-Series shocks, 1979-2004 Mustang with Solid Axle (non-IRS)
  • Securely mounts your shock top with a spherical bearing.
  • Eliminates the vertical deflection of any rubber.
  • Spherical bearing eliminates side loading on the shock shaft. Helps the shock perform its best.
  • Performs the same as a rod end on the end of the shock.
  • Does not reduce precious bump travel like a rod end will.
  • Use with or without a coil-over system.
  • Recommended for race cars; increased noise transmitted into passenger compartment.
  • Not easily reversible if returning to street use.
  • Not for use with IRS due to reduction in droop travel.
  • Required if installing MMCO-6 or COP-6.